Epithelantha micromeris var. unguispina (Boed.) Backeb.
, Cactus (Paris) no. 39: 31 (1954).
External links to taxonomic opinions:
- IPNI Life Sciences Identifier (LSID)
- urn:lsid:ipni.org:names:92868-2
- Publication
- Cactus; Organe de l'Association Française de Cactus et Plantes Grasses. Paris
- Collation
- no. 39: 31
- Family as entered in IPNI
- Cactaceae